ABB MNS - Page 115

MNS DTR / MNS Service
109
Konserwacja i części zamienne
Maintena
n
ce
and Spare Parts
5
Frequency
Install. category
Item
no.
Work to be performed
Measured, test & limit values, operating & auxiliary mate-
rials
A
B
C
Remarks
 Cable connection
 Insulation molten or even corroded
 Screwed connection at electrical equipment
 For tightening torque, cf. manufacturer´s instructions
 Insulation
Check controller module
 Check controller settings
 C/k value
 In accordance with manufacturer´s operating instructions
 cos setpoint
 response time
 Approximate value 60 s
 Check step triggering
Power circuit open, i.e.
fused switch discon-
nector removed
2.3
Direct connection (incoming and outgoing feeders
with circuit breaker)
Analogous to item 1.3
“Gen. inspection of
switchgear assembly”
Additional checks:
 Check main switching device
 Visual inspection of main connections
1°
6m
X
Procedure in
 Color change at switch main connections
accordance with
 Condition of main and eroded contacts
manufacturer´s
 Function test
1a
6m
X
instructions
 Check current transformer arrangement
 Fastening of transformers
 Secondary cable routing
 Condition of transformer housings
 Check supports at angle and connection sets
 Check screwed connections
 Mechanical condition of supporting plate
1a
6m
X
 Condition of partitioning (if available)
 Formation of creepage paths
 Check external connections
 Check screwed connections
 Check cable strain relief
 Cable routing, min. bending radii, edge protection, etc.